shell:$ nslookup -timeout=2 -retry=1 'edge-z-p4-shv-02-waw2.facebook.com' Server: 1.1.1.1 Address: 1.1.1.1#53 Non-authoritative answer: Name: edge-z-p4-shv-02-waw2.facebook.com Address: 57.144.112.179